EP3847028A1 - Verfahren zur verzerrungsfreien und homogenen beschichtung von werkstücken mit bidirektional gekrümmten oberflächen - Google Patents
Verfahren zur verzerrungsfreien und homogenen beschichtung von werkstücken mit bidirektional gekrümmten oberflächenInfo
- Publication number
- EP3847028A1 EP3847028A1 EP19761841.6A EP19761841A EP3847028A1 EP 3847028 A1 EP3847028 A1 EP 3847028A1 EP 19761841 A EP19761841 A EP 19761841A EP 3847028 A1 EP3847028 A1 EP 3847028A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- trajectories
- trajectory
- grid
- coating
- lines
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000000576 coating method Methods 0.000 title claims abstract description 110
- 239000011248 coating agent Substances 0.000 title claims abstract description 95
- 238000000034 method Methods 0.000 title claims abstract description 78
- 239000013598 vector Substances 0.000 claims abstract description 45
- 230000006978 adaptation Effects 0.000 claims description 20
- 230000000295 complement effect Effects 0.000 claims description 10
- 230000001419 dependent effect Effects 0.000 claims description 6
- FGUUSXIOTUKUDN-IBGZPJMESA-N C1(=CC=CC=C1)N1C2=C(NC([C@H](C1)NC=1OC(=NN=1)C1=CC=CC=C1)=O)C=CC=C2 Chemical compound C1(=CC=CC=C1)N1C2=C(NC([C@H](C1)NC=1OC(=NN=1)C1=CC=CC=C1)=O)C=CC=C2 FGUUSXIOTUKUDN-IBGZPJMESA-N 0.000 claims description 3
- 238000005034 decoration Methods 0.000 abstract description 6
- 230000008569 process Effects 0.000 description 9
- 230000008859 change Effects 0.000 description 4
- 239000002346 layers by function Substances 0.000 description 4
- 230000003287 optical effect Effects 0.000 description 4
- 239000010410 layer Substances 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 230000009467 reduction Effects 0.000 description 3
- 239000007787 solid Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 230000002349 favourable effect Effects 0.000 description 2
- 239000011159 matrix material Substances 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 230000007704 transition Effects 0.000 description 2
- 241000288673 Chiroptera Species 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 239000003086 colorant Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000012937 correction Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000004049 embossing Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 238000012804 iterative process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000010561 standard procedure Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
- B41J3/00—Typewriters or selective printing or marking mechanisms characterised by the purpose for which they are constructed
- B41J3/407—Typewriters or selective printing or marking mechanisms characterised by the purpose for which they are constructed for marking on special material
- B41J3/4073—Printing on three-dimensional objects not being in sheet or web form, e.g. spherical or cubic objects
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25J—MANIPULATORS; CHAMBERS PROVIDED WITH MANIPULATION DEVICES
- B25J9/00—Programme-controlled manipulators
- B25J9/16—Programme controls
- B25J9/1679—Programme controls characterised by the tasks executed
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
- G06K15/00—Arrangements for producing a permanent visual presentation of the output data, e.g. computer output printers
- G06K15/02—Arrangements for producing a permanent visual presentation of the output data, e.g. computer output printers using printers
- G06K15/021—Adaptations for printing on specific media
Definitions
- the invention relates to a method for the distortion-free and uniform coating of workpieces with bidirectionally curved surfaces.
- the workpiece surface is divided into grid areas on the basis of digital 2D decor data and digital 3D surface profile data provided for a workpiece to be coated; divided the workpiece surface into one or more trajectories of a coating head; the raster areas are projected along the normal vector of the trajectory onto the printhead trajectory; the 2D decor print data of the decor is adapted for each grid area as a function of the results of the grid projection and the workpiece surface is coated on the basis of the adapted print data.
- the present invention relates to a system for performing the method according to the invention.
- US 5,831,641 A discloses a method and apparatus for embossing high quality images on non-planar surfaces, including the surfaces of various types of three-dimensional objects, such as baseball bats, formed from a number of different types of materials.
- the apparatus of the invention includes a modified ink jet printer associated with a novel article positioning device that automatically positions the surface of the article to be printed on in a substantially parallel and slightly spaced plane from the location of the ink jet nozzle Inkjet printer holds.
- DE 1020 1200 6371 A1 describes a coating process.
- the method includes providing an image and performing a three-dimensional (3D) measurement process in one area. Space points are created according to the region. A 3D network is created according to the region. 3D web data is generated to a robot, e.g. B. a robotic arm to move for an inkjet printhead. Raster data, i.e. 3D or higher-dimensional raster matrix data are generated to control the inkjet print head. The robot is moved using the web data. The image is printed with the ink jet printhead using the raster data.
- EP 2 213 462 A1 a device for applying liquid drops to a surface is disclosed.
- the device has a feed device for feeding an article to an application device and a controller for controlling the feed device, an image storage device and the application device.
- the controller has a detector device for detecting a part of a three-dimensional structure of the object, the detector device being attached to the image storage device and / or the application device.
- the controller controls the application of fluid drops to the object corresponding to a print motif depending on the three-dimensional structure detected.
- the invention is a method for the distortion-free coating of 3-dimensional workpieces with partially bidirectionally curved surfaces, the method comprising at least the steps:
- the method according to the invention is able to reproduce even very irregular and strongly curved 3D surfaces in a reproducible manner, without deviations in the layer thickness and without distortion.
- the proposed geometrically-related adaptation means that significantly fewer trajectories of the printhead per surface unit have to be planned.
- Unfavorable angular edge areas can also be detected and coated within a travel path.
- the effective pressure range of a trajectory is therefore increased while the coating quality remains the same, since the distortions in the areas of “unfavorable” surface geometries are counteracted by the adaptation.
- the consequence of this is that the effective coating area can be increased over a travel path, so that the coating head has to travel a shorter distance to completely coat the surface.
- the surface data are made available to the print head as 2-dimensional data records and must be applied to a 3-dimensional surface.
- the use of three-dimensional surface data is also known, but cannot be used due to the two-dimensional mode of operation of the printing units. Both effects lead to a homogeneous surface on planar surfaces and, in the case of 3D bidirectionally curved surfaces, to distortions in the coating density.
- 3-dimensional workpieces can be coated using the method according to the invention.
- 3D workpieces are workpieces which, at least in sections, have a non-planar surface.
- the workpiece surface thus has height differences and differences in the slope of the surface. Due to the differences in height and the slope of the surface, the surface of the workpiece is curved.
- the actuator system can be one or more combined X, Y or C, U, Z arms Carry out linear and / or rotary movements in C, U, Z and carry the print / nozzle head and / or the workpiece.
- the nozzle head can expediently carry one or more nozzles.
- the print head preferably carries a plurality of print heads arranged in rows. This can increase the coating speed.
- the control unit controls the relative movement between the head and the workpiece and can also control the coating unit, for example via pulse control of individual rows or individual nozzles.
- the system can also be set up to design the coating process as a function of the movement of the coating head single pass, multipass or reverse.
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Robotics (AREA)
- Mechanical Engineering (AREA)
- Application Of Or Painting With Fluid Materials (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102018121557.6A DE102018121557A1 (de) | 2018-09-04 | 2018-09-04 | Verfahren zur verzerrungsfreien Beschichtung von Werkstücken mit bidirektional gekrümmten Oberflächen |
PCT/EP2019/073044 WO2020048853A1 (de) | 2018-09-04 | 2019-08-29 | Verfahren zur verzerrungsfreien und homogenen beschichtung von werkstücken mit bidirektional gekrümmten oberflächen |
Publications (2)
Publication Number | Publication Date |
---|---|
EP3847028A1 true EP3847028A1 (de) | 2021-07-14 |
EP3847028B1 EP3847028B1 (de) | 2023-05-10 |
Family
ID=67809488
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP19761841.6A Active EP3847028B1 (de) | 2018-09-04 | 2019-08-29 | Verfahren zur verzerrungsfreien und homogenen beschichtung von werkstücken mit bidirektional gekrümmten oberflächen |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP3847028B1 (de) |
DE (1) | DE102018121557A1 (de) |
WO (1) | WO2020048853A1 (de) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102020105704A1 (de) | 2020-03-03 | 2021-09-09 | FPT Robotik GmbH & Co. KG | Verfahren zur digitalen Beschichtung dreidimensionaler Werkstückoberflächen |
DE102020105702A1 (de) | 2020-03-03 | 2021-09-09 | FPT Robotik GmbH & Co. KG | Verfahren zur Funktionalisierung von Werkstückoberflächen mittels eines digitalen Beschichtungsverfahrens |
Family Cites Families (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5831641A (en) * | 1996-11-27 | 1998-11-03 | Eugene Gollings | Methods and apparatus for imprinting indecia on a three dimensional article |
JPH10278241A (ja) * | 1997-04-04 | 1998-10-20 | Canon Inc | インクジェット記録装置およびインクジェット記録方法 |
JP5033113B2 (ja) * | 2008-11-28 | 2012-09-26 | 株式会社ミマキエンジニアリング | 印刷データ生成装置、印刷データ生成方法、及び、印刷データ生成プログラム |
AT507848B1 (de) * | 2009-01-29 | 2011-06-15 | Durst Phototechnik Digital Technology Gmbh | Vorrichtung und verfahren zum aufbringen von fluidtropfen |
DE102012006371A1 (de) * | 2012-03-29 | 2012-07-05 | Heidelberger Druckmaschinen Aktiengesellschaft | Verfahren zum Bedrucken eines Objekts |
DE102012212469B4 (de) * | 2012-07-17 | 2022-10-06 | Peter Fornoff | Verfahren zum Bedrucken einer Oberfläche und Vorrichtung zum Bedrucken einer Oberfläche |
DE102014011301A1 (de) * | 2013-08-30 | 2014-12-18 | Heidelberger Druckmaschinen Ag | Verfahren zum Erzeugen einer Relativbewegung zwischen einer Strahleinheit und einer gekrümmten Oberfläche |
DE102015202616A1 (de) * | 2015-02-13 | 2015-04-16 | Heidelberger Druckmaschinen Ag | Verfahren zum Bearbeiten der Oberfläche eines dreidimensionalen Objekts |
EP3208746B1 (de) * | 2016-02-17 | 2019-07-03 | Heidelberger Druckmaschinen AG | Verfahren zum tintenstrahl-bedrucken wenigstens eines gekrümmten bereichs der oberfläche eines objekts |
DE102017215429A1 (de) * | 2017-09-04 | 2019-03-07 | Krones Ag | Direktdruckverfahren und Direktdruckmaschine zur Bedruckung von Behältern mit einem Direktdruck |
-
2018
- 2018-09-04 DE DE102018121557.6A patent/DE102018121557A1/de not_active Withdrawn
-
2019
- 2019-08-29 WO PCT/EP2019/073044 patent/WO2020048853A1/de unknown
- 2019-08-29 EP EP19761841.6A patent/EP3847028B1/de active Active
Also Published As
Publication number | Publication date |
---|---|
WO2020048853A1 (de) | 2020-03-12 |
EP3847028B1 (de) | 2023-05-10 |
DE102018121557A1 (de) | 2020-03-05 |
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